|Barked: Thu Nov 20, '08 11:48am PST |
|It depends on the specific type of cortisone given. Most would start working in 6-8 hours after injection. Some types of cortisone will last several hours, some several days and there are some that will last months...but those come with their own side effects. Cortisone will only relieve itch from allergies of insect bite, atopy or contact allergy (still need to wash off whatever the contact irritant was). Food allergies will not respond to cortisone.
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